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5868170 Axial interlock system for fluid containment system having inner and outer conduits  
A fluid conduit containment system includes an inner carrier conduit of a first type of resinous thermoplastic material having a first heat weldable annular end face and an outer safety...
5855720 Clamping head for use in joining plastic extrusions and method thereof  
An apparatus and method for creating a flash-free weld between the ends of thermoplastic members, wherein the members are held in position by holders, the ends of the members are softened by a...
5853529 Machine for cutting and fusing plastic plates  
A machine for cutting and fusing plastic plates includes a feeding means for feeding the plastic plates toward a first compressing device having a first supporting plate being flush with the...
5843271 Plastic pipe butt fusion machine and cart assembly  
An assembly is provided for butt fusing lengths of plastic pipe in axial relationship. The assembly includes a cart having a chassis and wheels, the chassis having a longitudinal axis defined by...
5834081 Tiles, method of manufacturing tiles from plastic material and equipment for facilitating such manufacture  
A plastics tile (9) is made up of a plurality of discrete plastics pieces (10, 11, 12) which are shaped relative to each other and assembled together to abut edge to edge in lower regions of the...
5830312 Butt fusion apparatus with clamping jaws for clamping pipe to be fused without interference between the clamps and the pipe  
An apparatus for attaching abutting ends of first and second coaxial pipe sections together includes a support frame, at least two spaced-part fixed pipe clamping jaws having respective upper and...
5824175 Carpet seaming tape and method  
A hot melt carpet seaming tape and a method of installation are effective to minimize seam peaking at carpet joints. A seaming iron used in the installation has a grooved base plate and connected...
5824179 Method of joining reinforced thermoplastic pipes  
An electrofusion coupler is slid over one of two thermoplastic pipes, each having a layer or layers of reinforcing fibers between the center of the wall of the pipe and the outside surface of the...
5824383 Methods of securing splices in curable rubber articles  
A method for securing splices in uncured rubber articles prior to vulcanization and secured splices resulting therefrom. The method includes covering a splice and two ends of uncured rubber with...
5814175 Welded thermoplastic polymer article and a method and apparatus for making same  
A method and apparatus for making a welded thermoplastic polymer article are provided. The method includes the application of a vacuum combined with sufficient heat to make the polymer flowable....
5814181 Device for butt welding pipes of thermoplastic plastic  
A device for butt welding pipes of thermoplastic plastic includes two pipe clamping units, aligned flush relative to each other, for clamping pipe ends therein. A first of the two units can be...
5811043 Method of soft tip forming  
The present invention comprises a catheter method of manufacture. The method includes the provision of a subassembly of a lubricious liner and reinforcement. Over the subassembly, a shaft tube,...
5800660 Method of producing entire frames made up of plastic profiles  
A description is given of a method for producing entire frames made up of plastic profiles for outer frames and sash frames. This method consists in the fact that the outer-frame profiles and the...
5800664 Carpet seaming apparatus and method of utilizing the same  
A carpet seaming apparatus is formed from an elongated plate that is inextendible in both longitudinal and lateral directions. The plate has a substantially smooth lower surface which enables the...
5795431 Welding equipment  
Welding equipment for welding plastic workpieces includes two opposite clamping units that can be moved with relation to each other and that are used for fixing and assembling the plastic...
5793017 Apparatus for automatically welding tubular components of fusible resin and pipe clamping apparatus and heating apparatus used for the same  
An apparatus for automatically a pair of welding tubular components made of a thermally fusible resin by abutting them to each other, includes a pair of clamp units for holding the pair of tubular...
5788789 Power device for fusing plastic pipe joints  
A handheld power control device adapted to be connected to an external power supply for controlling the electric power applied to a heating coil positioned in a fusible area of a thermoplastic...
5786054 Inductive welding of thermoplastic pipe  
Forming a novel double containment polymeric piping assembly by interfitting slidably interfittable polymeric inner pipe components, including a first induction responsive layer therebetween, and...
5779843 Method of fusion welding resin articles difficult to melt  
In a method of fusion welding resin articles difficult to melt due to a fusion retarder present in the articles in the form of a fusion retarding element or structure, the articles having surface...
5772824 Process and means for welding corrugated tubes and/or compound tubes and weld connection produced thereby  
In a process for the connecting of plastic tubes the wall of which has a corrugated cross section by electro-thermal welding, filling cores of plastic are inserted in the corrugation troughs of...
5770006 Butt fusion machine for manufacturing full size segemented pipe turns  
A machine for use in butt fusing in axial alignment plastic pipe having a selected maximum diameter is adaptable by the use of specially designed inserts secured in the lower portions of fixed and...
5753065 Heat welder with excess seam material removing apparatus and method  
Window frame elements to be fusion welded are mounted on movable beds. A locating plate is provided adjacent the heating plate for precise positioning of the frame elements. After the elements are...
5746863 Method of making wood tubing  
A wooden tube made up of tubular layers of wood veneer and the method of making it in which the various tubular layers are made from flat sheets of wood veneer having the grain in one layer...
5743992 Butt fusion apparatus with constant pressure accumulator  
An apparatus for attaching abutting ends of first and second coaxial pipe sections together. The apparatus includes a support frame, a fixed pipe clamping jaw having upper and lower jaw halves...
5743989 Method of welding plastics sheets together and a joint used therein  
Plastics sheets having edges to be bonded one to another as well as a plastics joint having at least two weldable regions are prepared, each region having an embedded wire extending along the...
5736000 Method and apparatus for manufacturing rectangular frames  
The present invention relates to a method and an apparatus for manufacturing rectangular frames of plastic material, for example, casements and door and window frames. The frames are manufactured...
5725722 Hot-melt applicator tip  
A method is disclosed for sealing and bonding the seams and edges of resilient and other types of floors, whereby specially formulated hot-melt sealants/adhesives are applied in molten form at the...
5712032 Patterned heat welding rod for seaming resilient flooring  
The welding rod is a laminate structure in which a print layer is disposed between a first thermoplastic layer and a second transparent thermoplastic layer. Preferably the welding rod is in the...
5695585 Method for welding bags to rings  
An apparatus for welding a reinforcing member to a bag-like device or contraceptive device is disclosed. The apparatus includes at least one hollow mandrel. The hollow mandrel has an outer surface...
5690776 Belt splicing system  
A belt splicing tool for thermally joining first and second ends of thermoplastic belts. The tool includes a position control means and first and second clamping mechanisms cooperatively engaged...
5685931 Method of manufacturing an accessory tile  
An accessory tile and its manufacturing method. The accessory tile is made of preformed tile bodies of plate shape which have colored patterns on their surfaces, respectively. The preformed tile...
5674337 Decorative adhesive coving process for matching synthetic surfaces  
A smooth, seamless arcuate-shaped inside corner is formed between a counter top and a splash board, both made from a filled polymer material. The counter top has a top surface, while the splash...
5674333 Total containment welding of plastic tubes  
Plastic tube sections are connected together by providing a pair of tubes each of which is inserted into the holder of a welding device in a bent condition so that each tube has a primary tube...
5670012 Electrically weldable plastic fitting  
A fitting formed as a welding sleeve has, preferably, two heating elements and is provided in the region of the plug contacts with a plate which can be inserted into a recess. On the plate is...
5665194 Image enhancement  
A method of enhancing an image (11) provided by thermoplastic marking material on a substrate (4) which material can be thermally activated to take on adhesive properties. The method comprises...
5639394 Electrofusion formed valve assembly  
An electrofusion coupling having an encapsulated electrical resistance heating element for fusing together the ends of polyethylene conduit is converted into a valve body by drilling a bore...
5632952 Method for lining lateral and main pipes  
A generally U-shaped lateral liner having a radially outwardly directed flange at its proximal end is drawn through a main pipe into a lateral pipe to be lined. A generally U-shaped main pipe...
5632845 Method for welding tubular parts  
A method for welding tubular thermoplastic parts includes the steps of (a) providing first tubular and second tubular parts made of thermoplastic material and each having an end face; (b)...
5630975 Method and a device for joining at least two plastic elements in a liquid- and/or gastight manner  
A method for joining at least two plastic elements in a liquid- and/or gastight manner, whereby an edge of a first plastic element is at least partially placed in an opening of a second plastic...
5622592 Apparatus for welding shaped workpieces formed from a plastic material  
A method of manufacturing by welding a shaped workpiece, which is formed of a plastic material and which consists of a tubular part having a radial bore and a union weldable to the tubular part in...
5614052 Vacuum retention gasket splicing  
The present invention relates to a method of splicing a hollow gasket such that the final welded joint remains highly flexible and does not impair the fluid flow between the two spliced sections....
5609713 Method for producing a bell joint  
A method and apparatus for fusing a bell connector to the end of a corrugated thermoplastic pipe are disclosed in which an expandable mandrel grips a preformed bell and a pipe support grips a pipe...
5609936 Drying screen for paper making machine  
A drying screen for paper making machines is described which comprises at least one layer of a thread composite and a thin glued-on, perforated or slit sheet i.e., with thermoplastic...
5599415 Method of thermally splicing zippers  
A method of thermally splicing a first zipper to a second zipper, and the thermally formed splice produced by this method, are provided. The first and second zippers each include a male profile...
5599419 Method for joining plastic materials together  
A method and apparatus for joining plastic profile members together, particularly to form picture frames. The profile members are held in place by fixture members against a locator member. The...
5589027 Custom fabricated and bordered rug and method and apparatus for forming it  
Bordered and custom fabricated rugs are formed by initially bonding carpet segments together along abutting edges, using a high temperature hot melt adhesive. Preferably a latex coated material is...
5575873 Endless coated abrasive article  
Endless coated abrasive articles having a splice. In general, the coated abrasive articles comprise a backing having abrasive grains bonded thereto by one or more layers of binder. This invention...
5573617 Method of making a two-tone interior vehicle trim panel skin  
A method for making a two-tone vinyl skin cover for an automotive interior trim panel is provided including heating a first vinyl skin to a working temperature; heating a second vinyl skin to a...
5571590 Methods of making papermaking felt and substrate  
This invention pertains to papermaking felts, methods of making such felts, methods of using the felts, and methods of making paper using such felts. A felt of the invention contains at least one...
5558737 Method of welding a tip to a catheter  
A method of manufacturing, extruding, milling and welding a high torque, thin monolithic walled guiding catheter having resilient reinforcement material (8, 23, 29, 70, 73) integrally spiralled or...